Gas-valve lock



May 29, 1928. 1,671,594

0. E. KOHLMANN GAS VALVE LOCK Filed March 25, 1927 u I l IN V EN TOR C/arence 5 Ho fi/m arm Camr /a ATTORNEYS i 9 of valves 'on gas ranges v or other A gas, appli- Patented May 29 crimson. konnivthmmxor"sANrnAnoIsco; anaemia-.

i a GAS-VALVE oom I i 'iaa'fitn filed Maren: 23, 1927. ma-m417571 hi i vention relates generally to "de a vices for precluding. the/accidental opening t S 1 Domestic gas the rotatable valve plug need only to. be

turned thru; an arc of 90" degrees between they have i been complicated in I construction and have. not been universally applicable, to-

all standard-valves ofthe petcock type. 'c

and cheap to manufacture.

It is f rth? object ofthis inventionto, generally improve upon construction of gas valve. locking devices so that their operationt a unlocking of the same is precluded v V Further objects of. this inventionwill appear ,fror'n the'--- fo1lowing' ,Qdescription in: which I have ,setfforth .,the .preferredembodi rnen'tl ofmy invention. 7 ltis to. be .un-a.

' I derstood that the appended claims are to. be

; ;Witl1'the state of the prior art.

I Referring lto the drawings v Figureil is a side elevational view ,ShQW-s a the plates 18 and-19 upon the valve "body,g-.

accorded e range of equivalents consistent ingfthe device of this invention, applied to respectito'the bodyof valve ofthe petcock a standard gas valve of the pet cock type.

shown 'in Fig. 1.

a The" invention comprises generally"; a

type.- [Another member is adapted to'be' secured to the stems of'the valve plug, and pivotally securedto this member there isia locking pawl, adapted to engage the toothed segment.

The lockin pawl carries a portion j nanuallgv operable;- to disengage the pawl. Insteadof'exten'd'ing this portion longitudinally' of the valve handle, it is extended'in the general direction of the plug stein 'so as not to be'in a position to be accidenl y n ag d. meaaitoema secureds 1 ranges andLheaters make useiot gas valves of. the petcock typa} in which 'the handle which is -attaichedoto'j pest is Plug hav ng n ex erna st mv 14 0f a plurality of pbolts or SCI/GWSIQO; these .fllowerplate a 7 n actual pra ti eiitha ".been vf und that three b I although two of the; bolts should, be; spaced p tn 'm re h 180 gr es T e pp r; P a e 191 prq i wi ha neu ral ape u 21' so as not to interfere with the .operation of stem 14. The periphery'rotfthe upp i V. i v. plate is provided for a -substantial portion 3 1 52 a aastalvae aknrm the line'3 3' f F g 1, c p v v I of which are preferably. inclined int }one 7 di- ,to the va lve stem; by-.providing- .-a portion i i :which is 5 clamped between the. handle "and," f

, I v l l l h ad, of having lockingqpawl v i 1 engage r-t h s gm ntiyto prevent r05 fta-tion of'thevalvehandle ineitherdirection, the; pawl when moved ;'inponeildirection;

t i I 1 ratchets over the teeth'so thatjthe ,valve inay.'- L v I offf and,on positions. A valve of this kind is'. apt to be accidentally caught and turned on, unless suitable locking mechanism v I the invention which has] been illustrated,

' kindhave previously been proposed, but 15 be moved ;to

(510.5601 PO i QI HWithOHtdisenfthere ,isshownastanda'rd valve ofthe pet-=1 cool; type which comprises 1, a; body ,inember, 1/. i 10 provided with threaded portions; 11 and v e I J L V lQ for-making'connectionsto; the gasipipesai o It is an object of this in'ventijon to devise mechanism for effecting locking sofa, gas, valve, whichwill be simple in construction svalves of-thistype are, rovided with a; 'ro a tatablep'lugli; having portsfwhichcontrol[; p s ag g be ween ai etand out e to which: detachably-is secured the laterally] extending handle 16. Generally the; hand-lei:

p I t ,is securedto the-steni by means of sere v is simplified and all possibility of accidentalv Which isthreaded into' j the stern head. i 14;

The locking devicegof vthis.invention which v v is adapted to heattachedto a valveo'f-this ndi mpris Pa r o Pl s 1 1 61 1 which-are adapted to vbe;clamped itopthe topg and bottom portions of body 10 fas -by; means bolts for example beingithreaded:intothe;

911 a c ent i-se u e y r inthereof with; a toothed s g ient 22, the teeth,

rection'. vAdapted tO be detaQhably.secured';- j s a to e: s i ;fl. e am mb lffl e wh h 1'00 is pi votally secured a lockingpawl 24115 A'g y ofe p d ets;mav ee p oyed for securing the member 23; to stem 14%:in order to :preYentjelative rotation, between i these members, although I prefer for simr loi" pli'city to provide'member 23 with apair'of lateral extending branches 26 whichare 1 adapted to be clamped upon opposite sides of 

